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tg3: Assign flags to fixes in start_xmit_dma_bug

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This patch adds a flag for each bug workaround in
tg3_start_xmit_dma_bug().  This is prep work for the following patch.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson 2009-11-02 12:33:33 +00:00 committed by David S. Miller
parent 01e6b953ad
commit 0e1406dd40
2 changed files with 21 additions and 7 deletions
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26
drivers/net/tg3.c
View File

@ -5124,7 +5124,8 @@ static int tigon3_dma_hwbug_workaround(struct tg3 *tp, struct sk_buff *skb,
/* Make sure new skb does not cross any 4G boundaries.
* Drop the packet if it does.
*/
if (ret || tg3_4g_overflow_test(new_addr, new_skb->len)) {
if (ret || ((tp->tg3_flags3 & TG3_FLG3_4G_DMA_BNDRY_BUG) &&
tg3_4g_overflow_test(new_addr, new_skb->len))) {
if (!ret)
skb_dma_unmap(&tp->pdev->dev, new_skb,
DMA_TO_DEVICE);
@ -5459,9 +5460,15 @@ static netdev_tx_t tg3_start_xmit_dma_bug(struct sk_buff *skb,
would_hit_hwbug = 0;
if (tp->tg3_flags3 & TG3_FLG3_5701_DMA_BUG)
if ((tp->tg3_flags3 & TG3_FLG3_4G_DMA_BNDRY_BUG) &&
tg3_4g_overflow_test(mapping, len))
would_hit_hwbug = 1;
else if (tg3_4g_overflow_test(mapping, len))
if ((tp->tg3_flags3 & TG3_FLG3_40BIT_DMA_LIMIT_BUG) &&
tg3_40bit_overflow_test(tp, mapping, len))
would_hit_hwbug = 1;
if (tp->tg3_flags3 & TG3_FLG3_5701_DMA_BUG)
would_hit_hwbug = 1;
tg3_set_txd(tnapi, entry, mapping, len, base_flags,
@ -5482,10 +5489,12 @@ static netdev_tx_t tg3_start_xmit_dma_bug(struct sk_buff *skb,
tnapi->tx_buffers[entry].skb = NULL;
if (tg3_4g_overflow_test(mapping, len))
if ((tp->tg3_flags3 & TG3_FLG3_4G_DMA_BNDRY_BUG) &&
tg3_4g_overflow_test(mapping, len))
would_hit_hwbug = 1;
if (tg3_40bit_overflow_test(tp, mapping, len))
if ((tp->tg3_flags3 & TG3_FLG3_40BIT_DMA_LIMIT_BUG) &&
tg3_40bit_overflow_test(tp, mapping, len))
would_hit_hwbug = 1;
if (tp->tg3_flags2 & TG3_FLG2_HW_TSO)
@ -12610,12 +12619,15 @@ static int __devinit tg3_get_invariants(struct tg3 *tp)
tp->irq_max = 1;
#ifdef TG3_NAPI
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5717) {
tp->tg3_flags |= TG3_FLAG_SUPPORT_MSIX;
tp->irq_max = TG3_IRQ_MAX_VECS;
}
#endif
if (!(tp->tg3_flags3 & TG3_FLG3_5755_PLUS)) {
tp->tg3_flags3 |= TG3_FLG3_4G_DMA_BNDRY_BUG;
tp->tg3_flags3 |= TG3_FLG3_40BIT_DMA_LIMIT_BUG;
}
if (!(tp->tg3_flags2 & TG3_FLG2_5705_PLUS) ||
(tp->tg3_flags2 & TG3_FLG2_5780_CLASS) ||

2
drivers/net/tg3.h
View File

@ -2759,6 +2759,8 @@ struct tg3 {
#define TG3_FLG3_TOGGLE_10_100_L1PLLPD 0x00008000
#define TG3_FLG3_PHY_IS_FET 0x00010000
#define TG3_FLG3_ENABLE_RSS 0x00020000
#define TG3_FLG3_4G_DMA_BNDRY_BUG 0x00080000
#define TG3_FLG3_40BIT_DMA_LIMIT_BUG 0x00100000
struct timer_list timer;
u16 timer_counter;